CN113932374A - Method and device for controlling freezing prevention of air conditioner, air conditioner and storage medium - Google Patents

Method and device for controlling freezing prevention of air conditioner, air conditioner and storage medium Download PDF

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Publication number
CN113932374A
CN113932374A CN202111146237.7A CN202111146237A CN113932374A CN 113932374 A CN113932374 A CN 113932374A CN 202111146237 A CN202111146237 A CN 202111146237A CN 113932374 A CN113932374 A CN 113932374A
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motor
air conditioner
current value
value
starting
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CN113932374B (en
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马玉奇
李辉增
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Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
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Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41—Defrosting; Preventing freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The application relates to the technical field of air conditioners and discloses a method and a device for controlling freezing prevention of an air conditioner, the air conditioner and a storage medium. The method comprises the following steps: acquiring a first inlet air temperature of an air conditioner in a refrigeration running state, a first motor current value and a first motor rotating speed of an indoor unit; determining a first stored motor current value matched with the first inlet air temperature and the first motor rotating speed, and obtaining a first current difference value between the first stored motor current value and the first motor current value; and controlling the air conditioner to perform anti-freezing protection operation under the condition that the first current difference is larger than a first set value. Therefore, the anti-freezing protection of the air conditioner is realized according to the current value of the motor, and the reliability and the efficiency of the anti-freezing protection are improved.

Description

Method and device for controlling freezing prevention of air conditioner, air conditioner and storage medium
Technical Field
The present application relates to the field of air conditioning technology, and for example, to a method and an apparatus for controlling freezing prevention of an air conditioner, and a storage medium.
Background
The air conditioner needs to be protected against freezing when operating in a cooling mode, and currently, in the related art, the temperature of a coil is detected by a coil sensor, and whether an anti-freezing protection program needs to be started is determined by judging the temperature of the coil, but if the detection fault of the sensor or the unreasonable arrangement of the position of the coil exists, the actual temperature of the coil may be very low, but the detection temperature detected by the coil temperature sensor is higher, so that the anti-freezing protection cannot be performed all the time, an indoor unit of the air conditioner freezes, and the problem that the refrigeration effect is poor is brought to a user, and the air conditioner can be damaged.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a method and a device for controlling freezing prevention of an air conditioner, the air conditioner and a storage medium, so as to solve the technical problem that the detected coil pipe temperature is too high and freezing prevention protection cannot be performed.
In some embodiments, the method comprises:
acquiring a first inlet air temperature of an air conditioner in a refrigeration running state, a first motor current value and a first motor rotating speed of an indoor unit;
determining a first stored motor current value matched with the first inlet air temperature and the first motor rotating speed, and obtaining a first current difference value between the first stored motor current value and the first motor current value;
and controlling the air conditioner to perform anti-freezing protection operation under the condition that the first current difference is larger than a first set value.
In some embodiments, the apparatus for air conditioner anti-freeze control includes:
the refrigeration acquisition module is configured to acquire a first inlet air temperature of the air conditioner in a refrigeration running state, a first motor current value and a first motor rotating speed of the indoor unit;
a refrigeration determination module configured to determine a first saved motor current value matching the first inlet air temperature and the first motor speed and obtain a first current difference between the first saved motor current value and the first motor current value;
and the first control module is configured to control the air conditioner to perform anti-freezing protection operation under the condition that the first current difference value is larger than a first set value.
In some embodiments, the apparatus for air conditioner anti-freeze control includes a processor and a memory storing program instructions, the processor being configured to execute the above method for air conditioner anti-freeze control when executing the program instructions.
In some embodiments, the air conditioner comprises the above device for controlling anti-freezing of the air conditioner.
In some embodiments, the storage medium stores program instructions that, when executed, perform the above-described method for air conditioner anti-freeze control
The method and the device for controlling freezing prevention of the air conditioner, the air conditioner and the storage medium provided by the embodiment of the disclosure can achieve the following technical effects:
under the conditions of the same air inlet temperature and the same motor rotating speed, when a first current difference value between a first stored motor current value of the air-conditioning indoor unit in a stored starting state and a first motor current value of the air-conditioning indoor unit in refrigerating operation is larger than a set value, the fact that the air conditioner needs to be protected against freezing can be determined, and therefore the situations that the coil temperature sensor reports errors or breaks down or normal freezing protection cannot be carried out when the position of the coil is improper are effectively prevented, meanwhile, the cost is reduced, and the production efficiency is improved.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
FIG. 1 is a schematic flow chart diagram illustrating a control method for preventing freezing of an air conditioner according to an embodiment of the present disclosure;
FIG. 2 is a schematic flow chart diagram illustrating a control method for preventing freezing of an air conditioner according to an embodiment of the present disclosure;
FIG. 3 is a schematic flow chart diagram illustrating a control method for preventing freezing of an air conditioner according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of an anti-freezing control device for an air conditioner according to an embodiment of the present disclosure;
FIG. 5 is a schematic structural diagram of an anti-freezing control device for an air conditioner according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of an anti-freezing control device for an air conditioner according to an embodiment of the disclosure.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The term "plurality" means two or more unless otherwise specified.
In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.
In the embodiment of the disclosure, when the air conditioner is in refrigeration operation, the judgment of the anti-freezing protection of the air conditioner can be performed according to the collected motor current value of the indoor unit, so that the judgment of the anti-freezing protection of the air conditioner can be performed without depending on or not depending on the temperature value collected by the coil temperature collecting device, the condition that the coil temperature collecting device fails to perform normal anti-freezing protection is effectively prevented, the condition that the coil cannot perform normal anti-freezing protection when the position of the coil is improper is also effectively prevented, the reliability and the efficiency of the anti-freezing protection of the air conditioner are improved, the use safety of air conditioner devices is guaranteed, and the service life of the air conditioner is also prolonged.
Fig. 1 is a schematic flow chart of a control method for preventing freezing of an air conditioner according to an embodiment of the disclosure. As shown in fig. 1, the process of the air conditioner anti-freezing control includes:
step 101: the method comprises the steps of obtaining a first inlet air temperature of the air conditioner in a refrigeration running state, and obtaining a first motor current value and a first motor rotating speed of an indoor unit.
In the embodiment of the disclosure, when the air conditioner operates in a refrigeration mode, namely the air conditioner is in a refrigeration operation state, the air inlet temperature of the air conditioner, the motor current value of the indoor unit and the motor rotating speed can be acquired in real time or at regular time. The first inlet air temperature of the air conditioner, the first motor current value of the indoor unit and the first motor rotating speed can be obtained by collecting each time.
In some embodiments, if the air conditioner corresponds to a gear wind speed, for example: the wind speed withstands wind speed, middle-grade wind speed and high-grade wind speed, and each grade of wind speed can correspond to one motor rotating speed. Therefore, the corresponding first motor rotating speed can be obtained by checking the wind speed gear of the air conditioner. Of course, the temperature can be collected by a temperature collecting device near the air inlet of the air conditioner, such as: and the temperature sensor acquires the corresponding first inlet air temperature. And the corresponding first motor current value may be obtained by power detection or current detection, or the like.
Step 102: and determining a first stored motor current value matched with the first inlet air temperature and the first motor rotating speed, and obtaining a first current difference value between the first stored motor current value and the first motor current value.
In the embodiment of the present disclosure, the stored motor current values corresponding to the intake air temperature and the motor rotation speed may be stored in the air conditioner in advance. Generally, when an air conditioner leaves a factory, a motor current value of an indoor unit of the air conditioner in a starting state is collected for one air conditioner of the same model or each air conditioner under the conditions of different inlet air temperatures and different motor rotation speeds, and the corresponding relation among the inlet air temperature, the motor rotation speed and the stored motor current value is stored according to the collected motor current value, wherein only the indoor unit in the starting state is in an open state.
For example: under the condition of only starting the indoor unit, under the conditions of different inlet air temperatures and different motor rotating speeds, collecting the motor current value of the indoor unit of one air conditioner of a certain model, then determining the collected motor current value as a stored motor current value, and generating and storing the corresponding relation among the inlet air temperature, the motor rotating speed and the stored motor current value. Therefore, for the air conditioners with the same model, the corresponding relation among the collected inlet air temperature, the collected motor rotating speed and the stored motor current value can be directly input and written into the storage medium, and therefore the air conditioner can store the corresponding relation among the inlet air temperature, the collected motor rotating speed and the stored motor current value. Or, acquiring and storing the corresponding relation among the inlet air temperature, the motor rotating speed and the stored motor current value which are configured and generated by other air conditioners of the same type in a network communication mode.
Therefore, the air conditioner can store the corresponding relation among the inlet air temperature, the motor rotating speed and the stored motor current value according to the collected motor current value. Or the air conditioner can acquire and store the corresponding relation between the inlet air temperature, the motor rotating speed and the stored motor current value through an input interface, network communication and the like.
Therefore, the first stored motor current value matched with the first inlet air temperature and the first motor rotating speed can be determined according to the corresponding relation among the stored inlet air temperature, the stored motor rotating speed and the stored motor current value.
Obtain the first inlet air temperature T1First motor current value I1And a first motor speed P1Then, the first inlet air temperature T can be determined according to the corresponding relation among the stored inlet air temperature, the motor rotating speed and the stored motor current value1And a first motor speed P1Adapted first stored current value Tb1. Thus, a first current difference Δ I between the first stored motor current value and the first motor current value may be obtained1I.e. Delta I1＝Tb1-I1。
Step 103: and controlling the air conditioner to perform anti-freezing protection operation under the condition that the first current difference value is larger than the first set value.
The first set point can be 0.6A, 0.8A, 1.0A, or 1.2A, etc., when Δ I1When the current value is larger than the first set value, the collected current value of the first motor is smaller and exceeds a certain range, at the moment, frosting may occur on the coil pipe or frosting is about to occur, and at the moment, the air conditioner needs to be controlled to perform anti-freezing protection operation.
It can be seen that, in this embodiment, under the condition of the same air inlet temperature and the same motor rotation speed, when a first current difference value between a first stored motor current value of the air-conditioning indoor unit in the stored starting state and a first motor current value of the air-conditioning indoor unit during the cooling operation is greater than a set value, it can be determined that the air conditioner needs to perform anti-freezing protection, so that the air-conditioning anti-freezing protection can be performed without depending on or not depending on a temperature value acquired by the coil temperature acquisition device, the condition that the coil temperature acquisition device cannot perform normal anti-freezing protection when a fault occurs is effectively prevented, the accuracy and efficiency of the anti-freezing protection of the air conditioner are improved, and the safety of the use of air-conditioning devices is ensured. Of course, the cost is reduced, and the production efficiency is improved.
When the air conditioner is installed, the specific installation position of the coil pipe also affects the motor current of the indoor unit, therefore, in some embodiments, when the air conditioner is started for use each time, the corresponding motor current can be collected and compared with the stored motor current to obtain the installation position correction value, so that the anti-freezing control of the air conditioner can be performed according to the first current difference value and the installation position correction value during the refrigeration operation, and therefore, the control of the air conditioner for the anti-freezing protection operation further comprises: acquiring the current starting inlet air temperature of the air conditioner in the current starting state, the current value of a current starting motor of the indoor unit and the rotating speed of the current starting motor; determining a starting and saving motor current value corresponding to the current starting inlet air temperature and the current starting motor rotating speed, and determining a difference value between the starting and saving motor current value and the current starting motor current value as an installation position correction value; and controlling the air conditioner to perform anti-freezing protection operation under the condition that the correction difference value between the first current difference value and the installation position correction value is larger than a second set value.
When the air conditioner is started up each time, the inner fan is started up firstly, namely, the air conditioner is in a starting state. At this time, the current starting air inlet temperature T is obtainedqCurrent value I of current starting motor of indoor unitqAnd the current starting motor speed PqAt this time, the corresponding relation among the inlet air temperature, the motor rotating speed and the stored motor current value can be stored according to the stored motor current value, and the T value can be determinedqAnd PqRespectively corresponding starting and saving motor current value IbqAnd obtaining the difference value between the current value of the starting and stored motor and the current value of the starting motor, namely the mounting position correction value delta IxWherein, Δ Ix＝Tbq-Iq。
Therefore, under the conditions of starting state, same air inlet temperature and same motor rotating speed, the obtained motor current difference can be determined as the air conditionerA correction value corresponding to the installation position, i.e. an installation position correction value, so that the first current difference Δ I can be obtained when the first current difference is obtained after the air conditioner is operated in a cooling state1And mounting position correction value delta IxCorrected difference Δ Ic between Δ Ic and Δ I1-△Ix＝(Tb1-I1)-(Tbq-Iq)。
The second setting value may be 0.3A, 0.4A, 0.5A, or 0.6A, etc., and when Δ Ic is greater than the second setting value, it indicates that the first motor current value still cannot be within the setting range after the position correction is performed, at this time, there may be frost on the coil pipe or there is imminent frost, at this time, the air conditioner needs to be controlled to perform the anti-freezing protection operation.
It can be seen that, in this embodiment, after the position installation error is eliminated, the first current difference between the first stored current value of the indoor unit of the air conditioner in the stored starting state and the first motor current value of the indoor unit of the air conditioner during the cooling operation is still relatively large, that is, it can be determined that the air conditioner needs to perform the anti-freezing protection, so that the anti-freezing protection of the air conditioner can be performed without depending on or not depending on the temperature value acquired by the coil temperature acquisition device, thereby effectively preventing the situation that the coil temperature acquisition device cannot perform the normal anti-freezing protection when the coil temperature acquisition device fails, and eliminating the position installation error, also effectively preventing the situation that the coil cannot perform the normal anti-freezing protection when the coil position is improper, improving the accuracy and efficiency of the anti-freezing protection of the air conditioner, ensuring the safety of the use of air conditioner devices, and also improving the service life of the air conditioner.
In some embodiments, the air conditioner is configured with a coil temperature acquisition device, such as a coil temperature sensor, and run the anti-freeze protection control based on the coil temperature acquired by the coil temperature acquisition device, if Δ I1When the temperature of the air conditioner is larger than the first set value or the delta Ic is larger than the second set value, the air conditioner still does not operate anti-freezing protection according to the temperature of the coil, and therefore the problem that a sensor of the air conditioner detects a fault or the position of the coil is unreasonably set is indicated.
In the embodiment of the present disclosure, when the operation of the air conditioner is determined according to the motor current value, that is, the air conditioner is in the anti-freezing protection operation state, the fault processing of the air conditioner is continuously performed according to the motor current value, that is, the method further includes: acquiring a second inlet air temperature of the air conditioner in an anti-freezing protection running state, a second motor current value of the indoor unit and a second motor rotating speed; determining a second stored motor current value matched with the second inlet air temperature and the second motor rotating speed, and obtaining a second current difference value between the second stored motor current value and the second motor current value; and under the condition that the second current difference is smaller than the first current difference, detecting the temperature position of the coil pipe, and alarming the fault.
Wherein, when the air conditioner is in the anti-freezing state, the second inlet air temperature T is obtained in real time or at regular time2Second motor current value I2And a second motor speed P2Then, the second inlet air temperature T can be determined according to the corresponding relation among the stored inlet air temperature, the motor rotating speed and the stored motor current value2And a second motor speed P2Second stored motor current value Tb2. Thus, a second current difference Δ I between the second saved motor current value and the second motor current value may be obtained2I.e. Delta I2＝Tb2-I2。
And, if Δ I2＜△I1The air conditioner does need to be protected against freezing, and the air conditioner also does have the problems that a sensor detects a fault or the position of a coil is unreasonable. At this time, the fault alarm can be performed through subtitles, voice, light and the like, and in some embodiments, the relevant fault information of the coil temperature position detection fault can be sent to a user terminal or an after-sale terminal which is communicated with the air conditioner to perform the coil temperature position detection fault alarm processing. Therefore, users, after-sales personnel and the like can timely acquire the fault information of the air conditioner for maintenance, the normal use of the air conditioner is guaranteed, and the service life of the air conditioner is prolonged.
The following operational flows are integrated into the specific embodiment to illustrate the control process for preventing freezing of an air conditioner according to the embodiment of the present invention.
In an embodiment of the present disclosure, when the air conditioner leaves the factory, the motor current value of the indoor unit of the air conditioner in the starting state is collected under the conditions of different inlet air temperatures and different motor rotation speeds, and the corresponding relationship among the inlet air temperature, the motor rotation speed, and the stored motor current value is generated and stored according to the collected motor current value. The first set value is 0.8A.
Fig. 2 is a schematic flow chart of a method for controlling freezing prevention of a user air conditioner according to an embodiment of the disclosure. As shown in fig. 2, the process of the air conditioner anti-freezing control includes:
step 201: obtaining a first inlet air temperature T of an air conditioner in a refrigeration running state1And a first motor current value I of the indoor unit1And a first motor speed P1。
Step 202: determining the first inlet air temperature T according to the corresponding relation among the stored inlet air temperature, the motor rotating speed and the stored motor current value1And a first motor speed P1Adapted first stored current value Ib1。
Step 203: obtaining a first stored current value Ib1And a first motor current value I1First current difference Δ I therebetween1。
Step 204: judgment of Delta I1> 0.8A? If yes, go to step 205, otherwise, go back to step 201.
Step 205: and controlling the air conditioner to perform anti-freezing protection operation.
It can be seen that, in this embodiment, under the condition of the same air inlet temperature and the same motor rotation speed, when the first current difference between the first stored motor current value of the air-conditioning indoor unit in the stored starting state and the first motor current value of the air-conditioning indoor unit during the cooling operation is greater than the set value, it can be determined that the air conditioner needs to be protected from freezing, so that the situation that the normal freezing protection cannot be performed when the coil temperature sensor reports or fails or the coil position is improper is effectively prevented, the cost is reduced, and the production efficiency is improved.
In one embodiment of the disclosure, the air conditioner can acquire and store the corresponding relation among the inlet air temperature, the motor speed and the stored motor current value of the air conditioner of the same model through the internet. The second set point was 0.5A.
Fig. 3 is a flowchart illustrating a method for controlling anti-freezing of an air conditioner according to an embodiment of the disclosure. Referring to fig. 3, the process for air conditioner anti-freeze control includes:
step 301: when the air conditioner is started and only the indoor unit is in the starting state, the current starting air inlet temperature Tq and the current value I of the current starting motor of the indoor unit are obtainedqAnd the current starting motor speed Pq。
Step 302: determining the current starting air inlet temperature Tq and the current starting motor rotating speed P according to the corresponding relation among the stored air inlet temperature, the stored motor rotating speed and the stored motor current valueqCorresponding starting and saving motor current value Ibq。
Step 303: will start and save the current value I of the motorbqCurrent value I of current starting motorqThe difference between the values is determined as a correction value Delta I of the installation positionx。
Step 304: and controlling the air conditioner to perform refrigeration operation.
Step 305: obtaining a first inlet air temperature T of an air conditioner in a refrigeration running state1And a first motor current value I of the indoor unit1And a first motor speed P1。
Step 306: determining the first inlet air temperature T according to the corresponding relation among the stored inlet air temperature, the motor rotating speed and the stored motor current value1And a first motor speed P1Adapted first stored current value Ib1。
Step 307: obtaining a first stored current value Ib1And a first motor current value I1First current difference Δ I therebetween1。
Step 308: judgment (. DELTA.I)1-△Ix)>0.5A? If so, go to step 309, otherwise, return to step 305.
Step 309: and controlling the air conditioner to perform anti-freezing protection operation.
Step 310: obtaining a second inlet air temperature T of the air conditioner in an anti-freezing protection running state2And a second motor current value I of the indoor unit2And a second motor speed P2。
Step 311: determining the second inlet air temperature T according to the corresponding relation among the stored inlet air temperature, the motor rotating speed and the stored motor current value2And a second motor speed P2Second stored motor current value Ib2。
Step 312: obtaining a second stored motor current value Ib2And a second motor current value I2A second current difference Δ I therebetween2。
Step 313: judgment of Delta I2<△I1Is there a If yes, go to step 314, otherwise, this process ends.
Step 314: and (5) carrying out detection fault alarm processing on the temperature position of the coil.
Therefore, in the embodiment, the anti-freezing protection control can be performed according to the corrected motor current value of the installation position, the air conditioner can be protected against freezing without depending on or not depending on the temperature value acquired by the coil temperature acquisition device, the situation that the coil temperature acquisition device cannot normally protect against freezing when in failure is effectively prevented, in addition, the position installation error is eliminated, the situation that the coil cannot normally protect against freezing when the position of the coil is improper is also effectively prevented, the accuracy and the efficiency of the anti-freezing protection of the air conditioner are improved, the use safety of air conditioner devices is guaranteed, and the service life of the air conditioner is also prolonged.
According to the above process for controlling freezing prevention of an air conditioner, a device for controlling freezing prevention of an air conditioner can be constructed.
Fig. 4 is a schematic structural diagram of an anti-freezing control device for an air conditioner according to an embodiment of the disclosure. As shown in fig. 4, the freezing prevention control device for an air conditioner includes: a refrigeration obtaining module 410, a refrigeration determining module 420, and a first control module 430.
The cooling obtaining module 410 is configured to obtain a first inlet air temperature of the air conditioner in a cooling operation state, and a first motor current value and a first motor rotating speed of the indoor unit.
A refrigeration determination module 420 configured to determine a first saved motor current value that matches the first inlet air temperature and the first motor speed and obtain a first current difference between the first saved motor current value and the first motor current value.
And the first control module 430 is configured to control the air conditioner to perform the anti-freezing protection operation if the first current difference is greater than the first set value.
In some embodiments, further comprising: the system comprises a collecting and storing module, a control module and a control module, wherein the collecting and storing module is configured to collect the motor current value of an indoor unit of the air conditioner in a starting state under the conditions of different inlet air temperatures and different motor rotating speeds, and only the indoor unit is in an opening state in the starting state; and storing the corresponding relation among the inlet air temperature, the motor rotating speed and the stored motor current value according to the collected motor current value.
In some embodiments, further comprising:
and the starting acquisition module is configured to acquire the current starting air inlet temperature of the air conditioner in the current starting state, the current value of the current starting motor of the indoor unit and the current rotating speed of the current starting motor.
And the starting determination module is configured to determine a starting and saving motor current value corresponding to the current starting inlet air temperature and the current starting motor rotating speed, and determine a difference value between the starting and saving motor current value and the current starting motor current value as an installation position correction value.
And the second control module is configured to control the air conditioner to perform anti-freezing protection operation under the condition that the correction difference value between the first current difference value and the installation position correction value is larger than a second set value.
In some embodiments, further comprising:
and the anti-freezing acquisition module is configured to acquire a second inlet air temperature of the air conditioner in an anti-freezing protection running state, and a second motor current value and a second motor rotating speed of the indoor unit.
And the anti-freezing determination module is configured to determine a second saved motor current value matched with the second inlet air temperature and the second motor rotating speed, and obtain a second current difference value between the second saved motor current value and the second motor current value.
And the fault reporting module is configured to perform coil pipe temperature detection fault warning processing under the condition that the second current difference is smaller than the first current difference.
The following illustrates an apparatus for controlling anti-freezing of an air conditioner according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of an anti-freezing control device for an air conditioner according to an embodiment of the disclosure. As shown in fig. 5, the freezing prevention control device for an air conditioner includes: the refrigeration obtaining module 410, the refrigeration determining module 420, and the first control module 430 may further include: the system comprises an acquisition and storage module 440, a start acquisition module 450, a start determination module 460, a second control module 470, an anti-freezing acquisition module 480, an anti-freezing determination module 490 and a fault repair module 4100.
When the air conditioner leaves the factory, the collecting and storing module 440 may collect the motor current value of the indoor unit of the air conditioner in the starting state at different inlet air temperatures and different motor rotation speeds, and generate and store the corresponding relationship between the inlet air temperature, the motor rotation speed and the stored motor current value according to the collected motor current value.
Thus, when only the indoor unit is started when the air conditioner is started, the start acquisition module 450 may acquire the current start intake air temperature of the air conditioner in the start state, the current start motor current value and the current start motor rotation speed of the indoor unit, and the start determination module 460 may determine the start stored motor current value corresponding to the current start intake air temperature and the current start motor rotation speed according to the intake air temperature, the motor rotation speed and the stored motor current value stored by the collection and storage module 440, and determine the difference between the start stored motor current value and the current start motor current value as the installation position correction value.
Thus, when the air conditioner is in a cooling operation, the cooling obtaining module 410 may obtain a first intake air temperature of the air conditioner, and a first motor current value and a first motor speed of the indoor unit. The refrigeration determining module 420 may also determine a first stored motor current value matching the first intake air temperature and the first motor speed according to the corresponding relationship between the intake air temperature, the motor speed, and the stored motor current value stored by the collecting and storing module 440, and obtain a first current difference between the first stored motor current value and the first motor current value.
Thus, the second control module 470 controls the air conditioner to perform the anti-freezing protection operation in the case that the corrected difference between the first current difference and the installation position correction value is greater than the second set value.
Certainly, after the air conditioner performs anti-freezing protection operation, the anti-freezing obtaining module 480 can obtain a second inlet air temperature of the air conditioner, a second motor current value of the indoor unit and a second motor rotating speed; the anti-freezing determination module 490 may also determine a second saved motor current value matching the second intake air temperature and the second motor speed according to the corresponding relationship between the intake air temperature, the motor speed, and the saved motor current value saved by the collection and saving module 440, and obtain a second current difference between the second saved motor current value and the second motor current value. Thus, the failure reporting module 4100 performs a coil temperature position detection failure alarm process when the second current difference is smaller than the first current difference.
Therefore, in this embodiment, the device for controlling anti-freezing of the air conditioner can perform anti-freezing protection control according to the corrected motor current value of the installation position, and can perform anti-freezing protection of the air conditioner without depending on or not depending on the temperature value acquired by the coil temperature acquisition device, thereby effectively preventing the failure of the coil temperature acquisition device, eliminating the installation error of the position, effectively preventing the failure of the normal anti-freezing protection when the coil position is improper, improving the accuracy and efficiency of the anti-freezing protection of the air conditioner, ensuring the use safety of air conditioner devices, and prolonging the service life of the air conditioner.
The embodiment of the present disclosure provides a device for controlling freezing prevention of an air conditioner, which is structurally shown in fig. 6 and includes:
a processor (processor)1000 and a memory (memory)1001, and may further include a Communication Interface (Communication Interface)1002 and a bus 1003. The processor 1000, the communication interface 1002, and the memory 1001 may communicate with each other through the bus 1003. Communication interface 1002 may be used for the transfer of information. The processor 1000 may call logic instructions in the memory 1001 to execute the method for air conditioner anti-freeze control of the above-described embodiment.
In addition, the logic instructions in the memory 1001 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.
The memory 1001 is a computer readable storage medium and can be used for storing software programs, computer executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 1000 executes functional applications and data processing, i.e., implements the method for air conditioner anti-freeze control in the above-described method embodiment, by executing program instructions/modules stored in the memory 1001.
The memory 1001 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. Further, the memory 1001 may include a high-speed random access memory and may also include a nonvolatile memory.
The embodiment of the present disclosure provides a control device for preventing freezing of an air conditioner, including: a processor and a memory storing program instructions, the processor configured to execute a method for air conditioner anti-freeze control when executing the program instructions.
The embodiment of the disclosure provides an air conditioner, which comprises the anti-freezing control device for the air conditioner.
The embodiment of the disclosure provides a storage medium which stores program instructions, and the program instructions can execute the method for controlling the anti-freezing of the air conditioner.
The disclosed embodiments provide a computer program product comprising a computer program stored on a storage medium, the computer program comprising program instructions that, when executed by a computer, cause the computer to perform the above-described method for air conditioner anti-freeze control.
The storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the disclosed embodiments includes the full ambit of the claims, as well as all available equivalents of the claims. As used in this application, although the terms "first," "second," etc. may be used in this application to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, unless the meaning of the description changes, so long as all occurrences of the "first element" are renamed consistently and all occurrences of the "second element" are renamed consistently. The first and second elements are both elements, but may not be the same element. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Claims (11)

1. A method for air conditioner freeze control, comprising:
acquiring a first inlet air temperature of an air conditioner in a refrigeration running state, a first motor current value and a first motor rotating speed of an indoor unit;
determining a first stored motor current value matched with the first inlet air temperature and the first motor rotating speed, and obtaining a first current difference value between the first stored motor current value and the first motor current value;
and controlling the air conditioner to perform anti-freezing protection operation under the condition that the first current difference is larger than a first set value.
2. The method of claim 1, wherein before obtaining the first inlet air temperature of the air conditioner in the cooling operation state, and the first motor current value and the first motor speed of the indoor unit, the method further comprises:
collecting the current value of a motor of an indoor unit of an air conditioner in a starting state under the conditions of different inlet air temperatures and different motor rotating speeds, wherein only the indoor unit is in an opening state in the starting state;
and storing the corresponding relation among the inlet air temperature, the motor rotating speed and the stored motor current value according to the collected motor current value.
3. The method of claim 2, wherein the controlling the air conditioner to perform freeze protection operation further comprises:
acquiring the current starting air inlet temperature of the air conditioner in a starting state, the current value of a current starting motor of the indoor unit and the rotating speed of the current starting motor;
determining a starting and saving motor current value corresponding to the current starting inlet air temperature and the current starting motor rotating speed, and determining a difference value between the starting and saving motor current value and the current starting motor current value as an installation position correction value;
and controlling the air conditioner to perform anti-freezing protection operation under the condition that the correction difference value between the first current difference value and the installation position correction value is larger than a second set value.
4. The method according to any one of claims 1-3, further comprising:
acquiring a second inlet air temperature of the air conditioner in an anti-freezing protection running state, a second motor current value of the indoor unit and a second motor rotating speed;
determining a second stored motor current value matched with the second inlet air temperature and the second motor rotating speed, and obtaining a second current difference value between the second stored motor current value and the second motor current value;
and under the condition that the second current difference is smaller than the first current difference, detecting the temperature position of the coil pipe and giving a fault alarm.
5. An apparatus for freezing control of an air conditioner, comprising:
the refrigeration acquisition module is configured to acquire a first inlet air temperature of the air conditioner in a refrigeration running state, a first motor current value and a first motor rotating speed of the indoor unit;
a refrigeration determination module configured to determine a first saved motor current value matching the first inlet air temperature and the first motor speed and obtain a first current difference between the first saved motor current value and the first motor current value;
and the first control module is configured to control the air conditioner to perform anti-freezing protection operation under the condition that the first current difference value is larger than a first set value.
6. The apparatus of claim 5, further comprising:
the system comprises a collecting and storing module, a control module and a control module, wherein the collecting and storing module is configured to collect the motor current value of an indoor unit of an air conditioner in a starting state under the conditions of different inlet air temperatures and different motor rotating speeds, wherein only the indoor unit is in an opening state in the starting state; and storing the corresponding relation among the inlet air temperature, the motor rotating speed and the stored motor current value according to the collected motor current value.
7. The apparatus of claim 6, further comprising:
the starting acquisition module is configured to acquire the current starting inlet air temperature of the air conditioner in the current starting state, the current value of a current starting motor of the indoor unit and the rotating speed of the current starting motor;
the starting determination module is configured to determine a starting and saving motor current value corresponding to the current starting inlet air temperature and the current starting motor rotating speed, and determine a difference value between the starting and saving motor current value and the current starting motor current value as an installation position correction value;
a second control module configured to control the air conditioner to perform an anti-freeze protection operation if a correction difference between the first current difference and the installation position correction value is greater than a second set value.
8. The apparatus of any one of claims 5-7, further comprising:
the anti-freezing acquisition module is configured to acquire a second inlet air temperature of the air conditioner in an anti-freezing protection running state, a second motor current value of the indoor unit and a second motor rotating speed;
an anti-freezing determination module configured to determine a second saved motor current value matching the second inlet air temperature and the second motor rotation speed, and obtain a second current difference value between the second saved motor current value and the second motor current value;
and the fault reporting module is configured to perform coil temperature detection fault warning processing under the condition that the second current difference is smaller than the first current difference.
9. An apparatus for air conditioner anti-freeze control, the apparatus comprising a processor and a memory having stored thereon program instructions, wherein the processor is configured to perform the method for air conditioner anti-freeze control of any of claims 1-4 when executing the program instructions.
10. An air conditioner, comprising: the device for the freezing prevention control of the air conditioner as claimed in claim 5 or 9.
11. A storage medium storing program instructions, characterized in that the program instructions, when executed, perform the method for air conditioner anti-freeze control according to any one of claims 1 to 4.
CN202111146237.7A 2021-09-28 2021-09-28 Method and device for freezing prevention control of air conditioner, air conditioner and storage medium Active CN113932374B (en)

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JP2020051666A (en) * 2018-09-26 2020-04-02 東芝キヤリア株式会社 Air conditioner
CN111189184A (en) * 2018-11-14 2020-05-22 青岛海尔空调器有限总公司 Air conditioner and anti-freezing control method thereof
CN112254290A (en) * 2020-09-18 2021-01-22 青岛海尔空调器有限总公司 Method and device for controlling air conditioner fan and air conditioner

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108317669A (en) * 2018-02-14 2018-07-24 青岛海尔空调器有限总公司 Indoor unit anti-freeze control method for air conditioner
JP2020051666A (en) * 2018-09-26 2020-04-02 東芝キヤリア株式会社 Air conditioner
CN111189184A (en) * 2018-11-14 2020-05-22 青岛海尔空调器有限总公司 Air conditioner and anti-freezing control method thereof
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